Is the mouth wide enough for a steripen?
We'd recommend against using a steripen with these Nalgene Wide Mouth Rectangular Bottles as it while you can fit it into the larger sizes, it's difficult to give the fluid inside a proper stir. These containers are designed for more food/fluid storage, but not so much drinking water. Have you considered the Nalgene Wide Mouth Tritan Water Bottles? They have a larger mouth that you can easily fit the steripen into.
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